Abstract: Nozzle for cylinders containing a high-pressure fluid, including: a lower body designed to be applied stably to the mouth of the cylinder; an intermediate component, housed rotatably in a seat of the lower body and designed to accommodate an accessory, such as a fluid dispensing tap, a valve, or other; and an upper ring nut element designed to engage with the lower body to lock stably in position the intermediate component, with the accessory oriented in the required direction with respect to the cylinder.

Abstract: High-pressure cylinder having an internal core in plastic material and a surface covering having one or more layers of composite material, partially incorporating a nozzle in metal material attached to the upper end portion of the neck of the core shaped to receive at least one accessory, such as a tap or a valve, the nozzle being composed of an internal element and an external element which can be screwed one to the other to clamp on the neck, wherein the neck has a slight narrowing of diameter starting from its mouth, such as to determine an internal conical surface suitable for coupling with a corresponding external conical surface of the internal element of the nozzle, and an external conical surface suitable for coupling with a corresponding internal conical surface of a modular ring in plastic or elastomeric material interposed between the neck and the external element of the nozzle.

Abstract: Ski boot with a variable-volume shell (1), the shaft of which, which is articulated on the lower shell, is constituted by a front part (5) equipped with flaps and by a rear part (11), these two parts coming to be applied edge to edge against one another in the closed position. The two parts of the shaft are moreover connected to one another by two flexible bands (23) which are capable of being locked on the rear part (11) by a locking device (26), this device preferably being unlockable by the buckle (17) intended for clamping the shaft around the leg.

Abstract: The tightening device comprises a tensioning lever, to which there are connected a first traction member and a second traction member. The device comprises means, such as a boss, exerting a delayed traction on the second traction member at the time of opening of the tensioning lever.